1. From the Departments of Radiology (M.D.S., N.E.C., W.R.M., M.M.L., E.B.S., A.P.W., K.E.M.), Pathology (A.P.S.), and Obstetrics/Gynecology (S.U., M.D.P., K.E.M.), Michigan Medicine, University of Michigan, 1500 E Medical Center Dr, Ann Arbor, MI 48109-5326.